How to display a line of a paragraph in bold which is fetched through JSON in android?

I am taking data from JSON.The fetched data may be a paragraph.So i want to display the heading of the paragraph in bold in android.All the data is stored in online database and fetched using JSON.

Please note:the data fetched at a time may be many paragraphs which has it has it's own heading.so i want to display the heading as bold.How can i achieve this?